<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .flex{
            width: 100%;
            display: flex;
            flex-wrap: wrap;
        }
        .flex span{
          width: 100%;
          display: block;
          font-size: 30px;
        }
        .flex span:nth-child(2n){
            color: red;
        }
    </style>
</head>
<body>
   <div class="flex">
    <span>create 创建</span>
    <span>add 添加</span>
    <span>edit 编辑</span>
    <span>update 更新</span>
    <span>delete 删除</span>
    <span>install 下载</span>
   </div>
</body>
</html>